In “Lilly’s Memoirs” we have the following account of him:—
“Kelly outwent the Doctor—viz., about the elixir and philosopher’s stone, which neither he nor his master attained by their own labour and industry. It was in this manner Kelly obtained it, as I had it related from an ancient minister, who new the certainty thereof from an old English merchant resident in Germany, at what time both Kelly and Dee were there.
“Dee and Kelly being on the confines of the emperor’s dominions, in a city where resided many English merchants, with whom they had much familiarity, there happened an old friar to come to Dr Dee’s lodging, knocking at the door. Dee peeped down the stairs:—’Kelly,’ says he, ‘tell the old man I am not at home.’ Kelly did so. The friar said, ’I will take another time to wait on him.’ Some few days after, he came again. Dee ordered Kelly, if it were the same person, to deny him again. He did so; at which the friar was very angry. ’Tell thy master I came to speak with him and to do him good, because he is a great scholar and famous;—but now tell him, he put forth a book, and dedicated it to the emperor. It is called ‘Monas Hieroglyphicas.’ He understands it not. I wrote it myself. I came to instruct him therein, and in some other more profound things. Do thou, Kelly, come along with me; I will make thee more famous than thy master Dee. Kelly was very apprehensive of what the friar delivered, and thereupon suddenly retired from Dee, and wholly applied unto the friar, and of him either had the elixir ready made, or the perfect method of its preparation and making. The poor friar lived a very short time after; whether he died a natural death, or was otherwise poisoned or made away by Kelly, the merchant who related this did not certainly know.”